Devices

1. Input

1.1. sends information to a device for processing

1.1.1. Mouse

1.1.2. Keyboard

2. Output

2.1. processes the information sent to a device and displays it

2.1.1. Printer

2.1.2. Monitor

3. Hardware

3.1. the "accessories" that help make the computer work

3.1.1. Computer monitor

3.1.2. sound card

4. Software

4.1. Use of Hardware is required to use software. Software has to be installed or used with hardware to work

4.1.1. Hard drive

4.1.2. CPU